Exam 27: Filters

In the application of a band-stop filter to suppress certain frequencies, the LC circuit is often called a ______________.

A logarithmic expression that compares two power levels is the

A filter that allows the higher frequency components of the applied voltage to develop voltage across the output load resistance is a

Which of the following is not a common type LC filter?

The frequency ______________ of a filter is typically shown by plotting its gain or loss versus frequency on logarithmic graph paper.

Generally, inductors and capacitors are not used for filtering because of their opposite frequency characteristics.

Current that varies in amplitude but does not reverse in polarity is considered ac.

The amount of attenuation offered by a filter is usually specified in decibels.

Capacitive coupling is probably the most common type of coupling in amplifier circuits.

The coupling capacitor isolates the dc voltages in each stage while still coupling the ac signal.

What type filter passes to the load all frequencies higher than the cut-off frequency?

The ability of any filter to reduce the amplitude of undesired frequencies is called ______________ of the filter.

The frequency at which the attenuation reduces the output to 70.7% is the

What type filter uses a high-pass filter combined with a low-pass filter in order to pass only a certain band of frequencies?

A reduction in power, corresponding to a loss in decibels is referred to as

What type filter uses a high-pass filter combined with a low-pass filter in order to block or severely attenuate a certain band of frequencies?

Just about the most common type coupling in amplifier circuits is

The ac component of a fluctuating dc waveform is called ripple.

The ______________ filter passes to the load all frequencies higher than the cutoff frequency.

A coupling capacitor couples the ac signal to R and the shunt bypass capacitor short-circuits R for the ac signal.